content: /**
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is
   * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
   * the License for the specific language governing permissions and limitations under the License.
   */
  
  package io.reactivex.observable.internal.observers;
  
  /**
   * Interface to allow the InnerQueuedSubscriber to call back a parent
   * with signals.
   *
   * @param <T> the value type
   */
  public interface InnerQueuedObserverSupport<T> {
  
      void innerNext(InnerQueuedObserver<T> inner, T value);
  
      void innerError(InnerQueuedObserver<T> inner, Throwable e);
  
      void innerComplete(InnerQueuedObserver<T> inner);
  
      void drain();
  }
  